how to start GUI for STM32MP135F-DK using QT

[JPabl.1]

Hi there TouchGFX team!

I've a STM32MP135F-DK and I would like to run it using QT, where do I start?

QT seems to have several examples but there's a lot of apps that I don't even know where to start. 

Thanks a lot in advance!

[PPAGE.13]

Hello @JPabl.1 

for Qt support on MP135, you will have two options:

- X-LINUX-QT expansion package that comes with OpenSTLinux Distribution

https://wiki.st.com/stm32mpu/wiki/X-LINUX-QT_Expansion_Package

- or a "QBSP" if you have a Qt commercial license.

Today there is not yet an official MP135 X-LINUX-QT or QBSP. But there will be released in the coming weeks.

For experience users, the current X-LINUX-QT package can be used for a "stm32mp135-disco" MACHINE.

It will requires skills to setup the environment and make appropriate modifications.

I listed these modifications below in case you or anybody are interested in.

1- First look at the Distribution package installation:

https://wiki.st.com/stm32mpu/wiki/X-LINUX-QT_Expansion_Package#How_to_install_Distribution_Package

But setup for "stm32mp13-disco" machine:

DISTRO=openstlinux-weston MACHINE=stm32mp13-disco BSP_DEPENDENCY="layers/meta-qt5 layers/meta-st/meta-st-x-linux-qt" source layers/meta-st/scripts/envsetup.sh

2- In layers/meta-st/meta-st-x-linux-qt/recipes-qt/qt5/qtbase_git.bbappend, add:
PACKAGECONFIG += " \
linuxfb \
"

3- Build and flash your image
bitbake st-image-qt

4- On target:
killall stlauncher
systemctl stop weston-graphical-session.service
export QT_QPA_PLATFORM=linuxfb
export QT_QPA_FB_DRM=1

Run your application.

Note: the way to compile a Qt application (Yocto receipe or Qt creator setup with a generated SDK) is not described here.

For Qt creator setup, you can have a look at:

https://community.st.com/t5/stm32-mpus-embedded-software-and/qt-creater-setup-for-stm32mp1/m-p/706440

Hope it will help,

Philippe.